Network File Sharing Protocols
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Towards Web-Based Delta Synchronization for Cloud Storage Services
Towards Web-based Delta Synchronization for Cloud Storage Services He Xiao Zhenhua Li ∗ Ennan Zhai Tianyin Xu Tsinghua University Tsinghua University Yale University UIUC Yang Li Yunhao Liu Quanlu Zhang Yao Liu Tsinghua University Tsinghua University Microsoft Research SUNY Binghamton Abstract savings in the presence of users’ file edits [29, 39, 40]. Delta synchronization (sync) is crucial for network-level Unfortunately, today delta sync is only available for efficiency of cloud storage services. Practical delta sync PC clients and mobile apps, but not for the web—the most pervasive and OS-independent access method [37]. techniques are, however, only available for PC clients 0 and mobile apps, but not web browsers—the most per- After a file f is edited into a new version f by users, vasive and OS-independent access method. To under- Dropbox’s PC client will apply delta sync to automati- stand the obstacles of web-based delta sync, we imple- cally upload only the altered bits to the cloud; in contrast, Dropbox’s web interface requires users to manually up- ment a delta sync solution, WebRsync, using state-of- 0 1 the-art web techniques based on rsync, the de facto delta load the entire content of f to the cloud. This gap sig- sync protocol for PC clients. Our measurements show nificantly affects web-based user experiences in terms of that WebRsync severely suffers from the inefficiency of both sync speed and traffic cost. JavaScript execution inside web browsers, thus leading Web is a fairly popular access method for cloud stor- to frequent stagnation and even hanging. -
What Is Peer-To-Peer File Transfer? Bandwidth It Can Use
sharing, with no cap on the amount of commonly used to trade copyrighted music What is Peer-to-Peer file transfer? bandwidth it can use. Thus, a single NSF PC and software. connected to NSF’s LAN with a standard The Recording Industry Association of A peer-to-peer, or “P2P,” file transfer 100Mbps network card could, with KaZaA’s America tracks users of this software and has service allows the user to share computer files default settings, conceivably saturate NSF’s begun initiating lawsuits against individuals through the Internet. Examples of P2P T3 (45Mbps) internet connection. who use P2P systems to steal copyrighted services include KaZaA, Grokster, Gnutella, The KaZaA software assesses the quality of material or to provide copyrighted software to Morpheus, and BearShare. the PC’s internet connection and designates others to download freely. These services are set up to allow users to computers with high-speed connections as search for and download files to their “Supernodes,” meaning that they provide a How does use of these services computers, and to enable users to make files hub between various users, a source of available for others to download from their information about files available on other create security issues at NSF? computers. users’ PCs. This uses much more of the When configuring these services, it is computer’s resources, including bandwidth possible to designate as “shared” not only the and processing capability. How do these services function? one folder KaZaA sets up by default, but also The free version of KaZaA is supported by the entire contents of the user’s computer as Peer to peer file transfer services are highly advertising, which appears on the user well as any NSF network drives to which the decentralized, creating a network of linked interface of the program and also causes pop- user has access, to be searchable and users. -
OES 2 SP3: Novell CIFS for Linux Administration Guide 9.2.1 Mapping Drives from a Windows 2000 Or XP Client
www.novell.com/documentation Novell CIFS Administration Guide Open Enterprise Server 2 SP3 May 03, 2013 Legal Notices Novell, Inc., makes no representations or warranties with respect to the contents or use of this documentation, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc., reserves the right to revise this publication and to make changes to its content, at any time, without obligation to notify any person or entity of such revisions or changes. Further, Novell, Inc., makes no representations or warranties with respect to any software, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc., reserves the right to make changes to any and all parts of Novell software, at any time, without any obligation to notify any person or entity of such changes. Any products or technical information provided under this Agreement may be subject to U.S. export controls and the trade laws of other countries. You agree to comply with all export control regulations and to obtain any required licenses or classification to export, re-export or import deliverables. You agree not to export or re-export to entities on the current U.S. export exclusion lists or to any embargoed or terrorist countries as specified in the U.S. export laws. You agree to not use deliverables for prohibited nuclear, missile, or chemical biological weaponry end uses. See the Novell International Trade Service Web page (http://www.novell.com/info/exports/) for more information on exporting Novell software. -
Oracle® ZFS Storage Appliance Security Guide, Release OS8.6.X
® Oracle ZFS Storage Appliance Security Guide, Release OS8.6.x Part No: E76480-01 September 2016 Oracle ZFS Storage Appliance Security Guide, Release OS8.6.x Part No: E76480-01 Copyright © 2014, 2016, Oracle and/or its affiliates. All rights reserved. This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited. The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing. If this is software or related documentation that is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, then the following notice is applicable: U.S. GOVERNMENT END USERS. Oracle programs, including any operating system, integrated software, any programs installed on the hardware, and/or documentation, delivered to U.S. Government end users are "commercial computer software" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, use, duplication, disclosure, modification, and adaptation of the programs, including any operating system, integrated software, any programs installed on the hardware, and/or documentation, shall be subject to license terms and license restrictions applicable to the programs. -
Shared Resource Matrix Methodology: an Approach to Identifying Storage and Timing Channels
Shared Resource Matrix Methodology: An Approach to Identifying Storage and Timing Channels RICHARD A. KEMMERER University of California, Santa Barbara Recognizing and dealing with storage and timing channels when performing the security analysis of a computer system is an elusive task. Methods for discovering and dealing with these channels have mostly been informal, and formal methods have been restricted to a particular specification language. A methodology for discovering storage and timing channels that can be used through all phases of the software life cycle to increase confidence that all channels have been identified is presented. The methodology is presented and applied to an example system having three different descriptions: English, formal specification, and high-order language implementation. Categories and Subject Descriptors: C.2.0 [Computer-Communication Networks]: General--se- curity and protection; D.4.6 ]Operating Systems]: Security and Protection--information flow controls General Terms: Security Additional Key Words and Phrases: Protection, confinement, flow analysis, covert channels, storage channels, timing channels, validation 1. INTRODUCTION When performing a security analysis of a system, both overt and covert channels of the system must be considered. Overt channels use the system's protected data objects to transfer information. That is, one subject writes into a data object and another subject reads from the object. Subjects in this context are not only active users, but are also processes and procedures acting on behalf of the user. The channels, such as buffers, files, and I/O devices, are overt because the entity used to hold the information is a data object; that is, it is an object that is normally viewed as a data container. -
The Edonkey File-Sharing Network
The eDonkey File-Sharing Network Oliver Heckmann, Axel Bock, Andreas Mauthe, Ralf Steinmetz Multimedia Kommunikation (KOM) Technische Universitat¨ Darmstadt Merckstr. 25, 64293 Darmstadt (heckmann, bock, mauthe, steinmetz)@kom.tu-darmstadt.de Abstract: The eDonkey 2000 file-sharing network is one of the most successful peer- to-peer file-sharing applications, especially in Germany. The network itself is a hybrid peer-to-peer network with client applications running on the end-system that are con- nected to a distributed network of dedicated servers. In this paper we describe the eDonkey protocol and measurement results on network/transport layer and application layer that were made with the client software and with an open-source eDonkey server we extended for these measurements. 1 Motivation and Introduction Most of the traffic in the network of access and backbone Internet service providers (ISPs) is generated by peer-to-peer (P2P) file-sharing applications [San03]. These applications are typically bandwidth greedy and generate more long-lived TCP flows than the WWW traffic that was dominating the Internet traffic before the P2P applications. To understand the influence of these applications and the characteristics of the traffic they produce and their impact on network design, capacity expansion, traffic engineering and shaping, it is important to empirically analyse the dominant file-sharing applications. The eDonkey file-sharing protocol is one of these file-sharing protocols. It is imple- mented by the original eDonkey2000 client [eDonkey] and additionally by some open- source clients like mldonkey [mlDonkey] and eMule [eMule]. According to [San03] it is with 52% of the generated file-sharing traffic the most successful P2P file-sharing net- work in Germany, even more successful than the FastTrack protocol used by the P2P client KaZaa [KaZaa] that comes to 44% of the traffic. -
Cheat Sheet – Common Ports (PDF)
COMMON PORTS packetlife.net TCP/UDP Port Numbers 7 Echo 554 RTSP 2745 Bagle.H 6891-6901 Windows Live 19 Chargen 546-547 DHCPv6 2967 Symantec AV 6970 Quicktime 20-21 FTP 560 rmonitor 3050 Interbase DB 7212 GhostSurf 22 SSH/SCP 563 NNTP over SSL 3074 XBOX Live 7648-7649 CU-SeeMe 23 Telnet 587 SMTP 3124 HTTP Proxy 8000 Internet Radio 25 SMTP 591 FileMaker 3127 MyDoom 8080 HTTP Proxy 42 WINS Replication 593 Microsoft DCOM 3128 HTTP Proxy 8086-8087 Kaspersky AV 43 WHOIS 631 Internet Printing 3222 GLBP 8118 Privoxy 49 TACACS 636 LDAP over SSL 3260 iSCSI Target 8200 VMware Server 53 DNS 639 MSDP (PIM) 3306 MySQL 8500 Adobe ColdFusion 67-68 DHCP/BOOTP 646 LDP (MPLS) 3389 Terminal Server 8767 TeamSpeak 69 TFTP 691 MS Exchange 3689 iTunes 8866 Bagle.B 70 Gopher 860 iSCSI 3690 Subversion 9100 HP JetDirect 79 Finger 873 rsync 3724 World of Warcraft 9101-9103 Bacula 80 HTTP 902 VMware Server 3784-3785 Ventrilo 9119 MXit 88 Kerberos 989-990 FTP over SSL 4333 mSQL 9800 WebDAV 102 MS Exchange 993 IMAP4 over SSL 4444 Blaster 9898 Dabber 110 POP3 995 POP3 over SSL 4664 Google Desktop 9988 Rbot/Spybot 113 Ident 1025 Microsoft RPC 4672 eMule 9999 Urchin 119 NNTP (Usenet) 1026-1029 Windows Messenger 4899 Radmin 10000 Webmin 123 NTP 1080 SOCKS Proxy 5000 UPnP 10000 BackupExec 135 Microsoft RPC 1080 MyDoom 5001 Slingbox 10113-10116 NetIQ 137-139 NetBIOS 1194 OpenVPN 5001 iperf 11371 OpenPGP 143 IMAP4 1214 Kazaa 5004-5005 RTP 12035-12036 Second Life 161-162 SNMP 1241 Nessus 5050 Yahoo! Messenger 12345 NetBus 177 XDMCP 1311 Dell OpenManage 5060 SIP 13720-13721 -
STATEMENT of WORK: SGS File System
ATTACHMENT A STATEMENT OF WORK: SGS File System DOE National Nuclear Security Administration & the DOD Maryland Office April 25, 2001 File Systems SOW April 25, 2001 Table of Contents TABLE OF CONTENTS ..................................................................................................................................2 1.0 OVERVIEW.................................................................................................................................................4 1.1 INTRODUCTION ..........................................................................................................................................4 2.0 MOTIVATION ............................................................................................................................................5 2.1 THE NEED FOR IMPROVED FILE SYSTEMS .................................................................................................5 2.2 I/O CHARACTERIZATION OF IMPORTANT APPLICATIONS...........................................................................6 2.3 CURRENT AND PROJECTED ENVIRONMENTS AT LLNL, LANL, SANDIA, AND THE DOD .........................6 2.4 SUMMARY OF FIVE TECHNOLOGY CATEGORIES ........................................................................................9 3.0 MINIMUM REQUIREMENTS (GO/NO-GO CRITERIA)..................................................................12 3.1 POSIX-LIKE INTERFACE [MANDATORY]........................................................................................12 3.2 INTEGRATION -
CIFS/NFS) Administrator's Guide
Hitachi Data Ingestor File System Protocols (CIFS/NFS) Administrator's Guide Product Version Getting Help Contents MK-90HDI035-13 © 2013- 2015 Hitachi, Ltd. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or stored in a database or retrieval system for any purpose without the express written permission of Hitachi, Ltd. Hitachi, Ltd., reserves the right to make changes to this document at any time without notice and assume no responsibility for its use. This document contains the most current information available at the time of publication. When new or revised information becomes available, this entire document will be updated and distributed to all registered users. Some of the features described in this document might not be currently available. Refer to the most recent product announcement for information about feature and product availability, or contact Hitachi Data Systems Corporation at https://portal.hds.com. Notice: Hitachi, Ltd., products and services can be ordered only under the terms and conditions of the applicable Hitachi Data Systems Corporation agreements. he use of Hitachi, Ltd., products is governed by the terms of your agreements with Hitachi Data Systems Corporation. Hitachi is a registered trademark of Hitachi, Ltd., in the United States and other countries. Hitachi Data Systems is a registered trademark and service mark of Hitachi, Ltd., in the United States and other countries. Archivas, Essential NAS Platform, HiCommand, Hi-Track, ShadowImage, Tagmaserve, Tagmasoft, Tagmasolve, Tagmastore, TrueCopy, Universal Star Network, and Universal Storage Platform are registered trademarks of Hitachi Data Systems Corporation. -
[Hal-00744922, V1] Improving Content Availability in the I2P Anonymous
Improving Content Availability in the I2P Anonymous File-Sharing Environment Juan Pablo Timpanaro, Isabelle Chrisment*, Olivier Festor INRIA Nancy-Grand Est, France *LORIA - ESIAL, Universit´ede Lorraine Email: fjuanpablo.timpanaro, [email protected] Email: [email protected] Abstract. Anonymous communication has gained more and more inter- est from Internet users as privacy and anonymity problems have emerged. Dedicated anonymous networks such as Freenet and I2P allow anony- mous file-sharing among users. However, one major problem with anony- mous file-sharing networks is that the available content is highly reduced, mostly with outdated files, and non-anonymous networks, such as the BitTorrent network, are still the major source of content: we show that in a 30-days period, 21648 new torrents were introduced in the BitTor- rent community, whilst only 236 were introduced in the anonymous I2P network, for four different categories of content. Therefore, how can a user of these anonymous networks access this varied and non-anonymous content without compromising its anonymity? In this paper, we improve content availability in an anonymous environment by proposing the first internetwork model allowing anonymous users to access and share content in large public communities while remaining anonymous. We show that our approach can efficiently interconnect I2P users and public BitTorrent swarms without affecting their anonymity nor their performance. Our model is fully implemented and freely usable. 1 Introduction Peer-to-peer file-sharing has always been one of the major sources of the Internet hal-00744922, version 1 - 24 Oct 2012 traffic, since its early beginnings in 2000. It has been moving from semi-central approaches (eDonkey2000, for example), to semi-decentralized approaches (Kazaa, for instance) to fully decentralized file-sharing architectures (like the KAD net- work). -
FAA-STD-075, Creating Service Identifiers
FAA-STD-075 June 29, 2021 SUPERSEDING FAA-STD-063 May 1, 2009 U.S. Department of Transportation Federal Aviation Administration U.S. Department of Transportation Federal Aviation Administration Standard Practice CREATING SERVICE IDENTIFIERS FAA-STD-075 June 29, 2021 FOREWORD This standard is approved for use by all Departments of the Federal Aviation Administration (FAA). This standard sets forth requirements for creating globally-unique identifiers for FAA service-oriented architecture (SOA)-based services. This standard has been prepared in accordance with FAA-STD-068, Department of Transportation Federal Aviation Administration, Preparation of Standards [STD068]. Comments, suggestions, or questions on this document shall be addressed to: Federal Aviation Administration System Wide Information Management (SWIM) Program Office, AJM-316 800 Independence Avenue, SW Washington, DC 20591 https://www.faa.gov/air_traffic/technology/swim/contacts/ i FAA-STD-075 June 29, 2021 Table of Contents 1 SCOPE ..................................................................................................................................................1 1.1 INTRODUCTION ...........................................................................................................................................1 1.2 INTENDED AUDIENCE ....................................................................................................................................1 1.3 BASIC CONCEPTS .........................................................................................................................................2 -
Samba-3 by Example
Samba-3 by Example Practical Exercises in Successful Samba Deployment John H. Terpstra May 27, 2009 ABOUT THE COVER ARTWORK The cover artwork of this book continues the freedom theme of the first edition of \Samba-3 by Example". The history of civilization demonstrates the fragile nature of freedom. It can be lost in a moment, and once lost, the cost of recovering liberty can be incredible. The last edition cover featured Alfred the Great who liberated England from the constant assault of Vikings and Norsemen. Events in England that finally liberated the common people came about in small steps, but the result should not be under-estimated. Today, as always, freedom and liberty are seldom appreciated until they are lost. If we can not quantify what is the value of freedom, we shall be little motivated to protect it. Samba-3 by Example Cover Artwork: The British houses of parliament are a symbol of the Westminster system of government. This form of government permits the people to govern themselves at the lowest level, yet it provides for courts of appeal that are designed to protect freedom and to hold back all forces of tyranny. The clock is a pertinent symbol of the importance of time and place. The information technology industry is being challenged by the imposition of new laws, hostile litigation, and the imposition of significant constraint of practice that threatens to remove the freedom to develop and deploy open source software solutions. Samba is a software solution that epitomizes freedom of choice in network interoperability for Microsoft Windows clients.